201125200 六、發明說明： 【發明所屬之技術領域】 本發明係為一種具有導流件之氣冷式燃料電池結構，特別 為一種應用於燃料電池之具有導流件之氣冷式燃料電池結構。 【先前技術】 燃料電池組是一種發電裝置，其係藉由通入燃料氣體與空 氣並經過一連串電化學反應將化學能轉變為電能，以得到電流 及水。由於燃料電池組具有高發電量和對人體及環境傷害低等 特性，因此是目前最具發展性的能源方式之一。 然而對於燃料電池組而言，其燃料氣體或空氣的導入，或 反應後高能量水氣的導出，都是影響燃料電池組轉換率的重要 因素之一，特別是使燃料氣體、空氣及水氣如何均勻的導入或 導出，並使其内部氣流均勻的分佈，更是一門重要的課題。 第1圖係為習知之長風罩燃料電池組結構示意圖。第2圖 係為習知之長風罩燃料電池組溫度分佈圖。 燃料電池組10係由多個燃料電池單體組合堆疊而成，如 第1圖所示，習知技術中燃料電池組10所配合使用的抽氣或 進氣系統，都是藉由風扇20直接吹入或捲出其内部氣體。如 第2圖所示，而又因為燃料電池組10的中心地帶因為正對風 扇20的位置，因此氣流相對流通順暢，所以在燃料電池組10 中心地帶的溫度相對地低，然而相反地因燃料電池組10兩側 未正對風扇20，所以其溫度也相對提高。對於燃料電池組10 整體而言，整體溫度分佈就顯的不平均，並影響燃料電池組10 201125200 側邊的發電效能。 習知技術中為改善氣流不均勻現象，可以利用加長風罩30 之長度並使風罩30呈錐狀來改善其内部氣流分佈，但相對地 卻也造成風罩30體積大、成本高、重量重等缺點，並且風罩 30之長度也無法無限制地增加，所以改善氣流分佈不均勻的效 果仍是有限。 【發明内容】 • #發明係為-種具有導流件之氣冷式燃料電池結構，其係 使用導流件控制燃料電池組内氣體的流向，以達到使燃料電池 組内部氣流均勻分佈之功效，進而減少燃料電池組内部溫度 差，並進一步提升燃料電池組發電效能。 本發明係為一種具有導流件之氣冷式燃料電池結構，其係 使用導流件使燃料電池組内部氣流的分佈均勻，並可藉由縮短 風罩之長度，以減少壓力損失並降低風扇耗能，而且因為短風 鲁罩的設計又可降低風罩成本與風罩重量。 為達上述功效，本發明係提供一種具有導流件之氣冷式燃 料電池結構，其包括：一燃料電池組，其具有複數個氣體流道； —風罩，其具有一第一開口及一第二開口，又第一開口係氣密 於氣體流道之一第一端部；一風扇，其係裝設於第二開口；以 及一導流件’其係設置於風罩内，以引導風罩内之氣流，以使 得氣體流道之氣體流量均勻。 上述具有導流件之氣冷式燃料電池結構，其中風罩之深度 為120〜150公釐。 201125200 /上述具有導流件之氣冷式燃料電池結構，其中風罩之内側 壁係為一弧面。 上述具有導流件之氣冷式燃料電池結構，其中導流件係藉 由一連接體連接於風罩之内側壁。 署舰t述具有導流件之氣冷式燃料電池結構，其中導流件係設 第1口或第二開口。 一夕t述具有導流件之氣冷式燃料電池結構，其中導流件係為 夕邊形導流件、一圓形導流件或-橢圓形導流件。，、 -、藉由本發明的實施’至少可達到下列進步功效： =用導流件使燃料電池_部氣流均勻分佈，以減少燃料 二、。池組内部溫度差，進而提高燃料電池組發電效能。 二由縮⑯風罩長度，以提升風扇使用效果，並可降低風 成本重量，減少壓力損失。 點 點 以實2何熟f相關技藝者了解本發明之技術内容並據 式Κι據本說明書所揭露之内容、申請專利範圍及圖 點 4相關技藝者可輕易地理解本發明相關之目的及優 。*將在實施方式中詳細敛述本發明之詳細特徵以及優 【實施方式】 池結t發明之—種具料流件6G之氣冷式燃料 60藉連接施例圖。第4A圖係為本發明之一種導流 明之〜種導流=0=罩50之實施態樣。第4B圖係為本 L 連接於風罩50之實施態樣。第5A圖係 201125200 本發明之一種具有導流件60之氣冷式燃料電池結構40内氣流 流向之示意圖。第5B圖係為本發明之另一種具有導流件60 之氣冷式燃料電池結構40内氣流流向之示意圖。第6圖係為 本發明之一種未加裝導流件60之短風罩氣冷式燃料電池結構 40之溫度分佈圖。第7圖係為本發明之一種加裝導流件60之 短風罩氣冷式燃料電池結構40之溫度分佈圖。 如第3圖所示，本實施例係為一種具有導流件60之氣冷 式燃料電池結構40，其包括：一燃料電池組10 ; —風罩50 ; • 一風扇20 ;以及一導流件60。 燃料電池組10是由複數個燃料電池單體堆疊而成，又燃 料電池組10具有複數個氣體流道11，以供氣體進氣或出氣。 氣體流道之第一端部12可以為進氣端部，而其第二端部13(如 第5A圖所示）相對可以為出氣端部，又或者氣體流道之第一端 部12為出氣端，而其第二端部13為進氣端（如第5B圖所示）。 風罩50具有一第一開口 51(如第5A圖所示）及一第二開口 鲁52，風罩50之深度為120〜150公釐，相較於習知技術可歸類 為短風罩，而為使氣體流動順暢風罩50之内側壁係設計為一 弧面。又第一開口 51係氣密於燃料電池組10的氣體流道11 之第一端部12。 風扇20，係裝設於第二開口 52並可以一定轉速轉動，另 可藉由葉片21之設計以使得風扇20可吹入或捲出燃料電池組 10之内部氣流。 導流件60係設置於風罩50内，用以引導風罩50内之氣 流，以使得燃料電池組10之氣體流道11之氣體流量均勻，而 201125200 導流件60之外型係可為一多邊形導流件、一圓形導流件或一 橢圓形導流件，並且導流件60可設置鄰近於風罩50之第一開 口 51或第二開口 52，但不僅限於此。如第4A圖所示，導流 件60可藉由一連接體61連接於風罩50内側壁，又或者如第 4B圖所示，導流件60可直接連接於風罩50内側壁上。 如第5A圖所示，當第一端部12為進氣端時，風扇20可 用於將氣流吹入燃料電池組10内部，並由於導流件60可設置 在風罩50中，因此使得風罩50内部氣流無論中心部分或側邊 氣流皆同時抵達燃料電池組10。如第5B圖所示，當第一端部 12為出氣端時，風扇20則用以捲出氣體，並同樣地利用導流 件60的作用，可使得在中心地帶或側邊的氣流皆可同時被帶 離燃料電池組10。如第5A圖及第5B圖所示，圖中箭頭可說 明氣流之流向。 為了說明導流件60之必要性與功能性，如第6圖所示， 其係為未加裝導流件60之氣冷式燃料電池結構40溫度分佈 圖。雖然縮短風罩長度可減少内部氣流流通時的損失，並且確 實有助於整體溫度的降低，但仍無法改善内部氣流不均勻的現 象。故說明縮短風罩或變更風罩50設計都僅能使整體溫度下 降，但卻無法使氣流均勻化，換句話說燃料電池組10内仍存 在一定的溫度差。 如第7圖所示，其係為加裝導流件60之氣冷式燃料電池 結構40溫度分佈圖。加裝導流件60後的溫度分佈圖其整體溫 度分佈是相當平均的，更佳的是於本實施例中加裝導流件60 後其溫度差範圍可縮小至5°C以内。 201125200 惟上述各實施例係用以說明本發明之特點，其目的在使熟 習該技術者能瞭解本發明之内容並據以實施，而非限定本發明 之專利範圍，故凡其他未脫離本發明所揭示之精神而完成之等 效修飾或修改’仍應包含在以下所述之申請專利範圍中。 【圖式簡單說明】 第1圖係為習知之長風罩燃料電池組結構示意圖。 第2圖係為習知之長風罩燃料電池組溫度分佈圖。 Φ 第3圖係為本發明之一種具有導流件之氣冷式燃料電池結構之 分解實施例圖。 第4A圖係為本發明之一種導流件藉連接體連接於風罩之實施 態樣。 第4B圖係為本發明之一種導流件連接於風罩之實施態樣。 第5A圖係為本發明之一種具有導流件之氣冷式燃料電池結構 内氣流流向之示意圖。 第5B圖係為本發明之另一種具有導流件之氣冷式燃料電池結 9 構内氣流流向之示意圖。 第6圖係為本發明之一種未加裝導流件之短風罩氣冷式燃料電 池結構之溫度分佈圖。 第7圖係為本發明之一種加裝導流件之短風罩氣冷式燃料電池 +結構之溫度分佈圖。 【主要元件符號說明】 10................燃料電池組 9 201125200 11 ................氣體流道 12 ................第一端部 13 ................第二端部 20 ................風扇 21 ................葉片 30................風罩 40................氣冷式燃料電池結構 50 ................風罩 51 ................第一開口 52 ................第二開口 60 ................導流件 61 ................連接體201125200 VI. Description of the Invention: [Technical Field] The present invention relates to an air-cooled fuel cell structure having a flow guiding member, and more particularly to an air-cooled fuel cell structure having a flow guiding member applied to a fuel cell. [Prior Art] A fuel cell stack is a power generating device that converts chemical energy into electric energy by passing a fuel gas and air through a series of electrochemical reactions to obtain electric current and water. The fuel cell stack is one of the most developmental energy sources due to its high power generation and low damage to humans and the environment. However, for fuel cell stacks, the introduction of fuel gas or air, or the derivation of high-energy water vapor after the reaction, is one of the important factors affecting the conversion rate of the fuel cell stack, especially the fuel gas, air and moisture. How to evenly introduce or export and distribute the internal airflow evenly is an important issue. Figure 1 is a schematic view of the structure of a conventional long hood fuel cell stack. Figure 2 is a temperature distribution diagram of a conventional long hood fuel cell stack. The fuel cell stack 10 is formed by stacking a plurality of fuel cell units. As shown in FIG. 1 , the pumping or intake system used in the fuel cell stack 10 of the prior art is directly driven by the fan 20 . Blow in or roll out its internal gas. As shown in Fig. 2, and because the center of the fuel cell stack 10 is in direct contact with the fan 20, the airflow is relatively smooth, so the temperature in the center of the fuel cell stack 10 is relatively low, but conversely due to the fuel The sides of the battery pack 10 are not facing the fan 20, so the temperature thereof is relatively increased. For the fuel cell stack 10 as a whole, the overall temperature distribution is not uniform, and affects the power generation efficiency of the fuel cell stack 10 201125200 side. In order to improve the airflow non-uniformity in the prior art, the length of the hood 30 can be lengthened and the hood 30 can be tapered to improve the internal airflow distribution, but the hood 30 is relatively large in size, high in cost, and heavy in weight. The disadvantages are heavy, and the length of the hood 30 cannot be increased without limitation, so the effect of improving the uneven distribution of the airflow is still limited. SUMMARY OF THE INVENTION The invention is an air-cooled fuel cell structure having a flow guiding member, which uses a flow guiding member to control the flow of gas in the fuel cell stack to achieve uniform distribution of the gas flow inside the fuel cell stack. , thereby reducing the internal temperature difference of the fuel cell stack and further improving the power generation performance of the fuel cell stack. The invention relates to an air-cooled fuel cell structure with a flow guiding member, which uses a flow guiding member to evenly distribute the airflow inside the fuel cell stack, and can reduce the pressure loss and reduce the fan by shortening the length of the wind hood. Energy consumption, and because of the design of the short wind hood, can reduce the cost of the hood and the weight of the hood. In order to achieve the above effects, the present invention provides an air-cooled fuel cell structure having a flow guiding member, comprising: a fuel cell stack having a plurality of gas flow paths; a hood having a first opening and a a second opening, wherein the first opening is airtight to the first end of the gas flow path; a fan is mounted to the second opening; and a flow guide is disposed in the hood to guide The airflow in the hood is such that the gas flow rate of the gas flow path is uniform. The above air-cooled fuel cell structure having a flow guiding member, wherein the hood has a depth of 120 to 150 mm. 201125200 / The above air-cooled fuel cell structure with a flow guide, wherein the inner wall of the hood is a curved surface. The above air-cooled fuel cell structure having a flow guiding member, wherein the flow guiding member is coupled to the inner side wall of the hood by a connecting body. The invention relates to an air-cooled fuel cell structure having a flow guiding member, wherein the flow guiding member is provided with a first port or a second opening. An air-cooled fuel cell structure having a flow guide is described, wherein the flow guiding member is an hour-shaped flow guiding member, a circular flow guiding member or an elliptical flow guiding member. At least, the following advancements can be achieved by the practice of the present invention: = The fuel cell-side airflow is evenly distributed by the flow guiding member to reduce the fuel. The temperature difference inside the pool group improves the power generation performance of the fuel cell stack. Second, the length of the hood is reduced by 16 to improve the fan effect, and the wind cost and weight can be reduced to reduce the pressure loss. The technical content of the present invention will be understood by those skilled in the art, and the related objects and advantages of the present invention can be easily understood by those skilled in the art according to the contents disclosed in the specification, the scope of application, and the related art. . * The detailed features and advantages of the present invention will be described in detail in the embodiments. [Embodiment] The air-cooled fuel 60 of the present invention is disclosed in the embodiment of the present invention. Fig. 4A is an embodiment of a guide flow of the present invention. Fig. 4B is a view showing an embodiment in which L is connected to the hood 50. Fig. 5A is a schematic view showing the flow of air in the air-cooled fuel cell structure 40 having the flow guiding member 60 of the present invention. Fig. 5B is a schematic view showing the flow of air in the air-cooled fuel cell structure 40 having the flow guiding member 60 of the present invention. Figure 6 is a temperature distribution diagram of a short hood air-cooled fuel cell structure 40 without a flow guide 60 of the present invention. Figure 7 is a temperature distribution diagram of a short hood air-cooled fuel cell structure 40 incorporating a flow guide 60 of the present invention. As shown in FIG. 3, the present embodiment is an air-cooled fuel cell structure 40 having a flow guiding member 60, comprising: a fuel cell stack 10; a hood 50; a fan 20; and a flow guiding Item 60. The fuel cell stack 10 is formed by stacking a plurality of fuel cell stacks, and the fuel cell stack 10 has a plurality of gas flow passages 11 for gas intake or exhaust. The first end portion 12 of the gas flow passage may be an intake end portion, and the second end portion 13 (as shown in FIG. 5A) may be an outlet end portion, or the first end portion 12 of the gas flow passage may be The outlet end, and the second end 13 thereof is the intake end (as shown in Fig. 5B). The windshield 50 has a first opening 51 (as shown in FIG. 5A) and a second opening 52. The hood 50 has a depth of 120 to 150 mm and can be classified as a short hood as compared with the prior art. In order to make the gas flow smoothly, the inner side wall of the windshield 50 is designed as a curved surface. Further, the first opening 51 is hermetically sealed to the first end portion 12 of the gas flow path 11 of the fuel cell stack 10. The fan 20 is mounted on the second opening 52 and is rotatable at a certain speed. The blade 21 is designed such that the fan 20 can blow in or out of the internal airflow of the fuel cell stack 10. The guide member 60 is disposed in the hood 50 for guiding the airflow in the hood 50 such that the gas flow rate of the gas flow passage 11 of the fuel cell stack 10 is uniform, and the 201125200 guide member 60 can be A polygonal flow guide, a circular flow guide or an elliptical flow guide, and the flow guide 60 may be disposed adjacent to the first opening 51 or the second opening 52 of the hood 50, but is not limited thereto. As shown in Fig. 4A, the flow guiding member 60 can be connected to the inner side wall of the hood 50 by a connecting body 61, or as shown in Fig. 4B, the flow guiding member 60 can be directly connected to the inner side wall of the hood 50. As shown in FIG. 5A, when the first end portion 12 is the intake end, the fan 20 can be used to blow the airflow into the interior of the fuel cell stack 10, and since the flow guiding member 60 can be disposed in the hood 50, the wind is made The internal airflow of the cover 50 reaches the fuel cell stack 10 at the same time regardless of the central portion or the side airflow. As shown in FIG. 5B, when the first end portion 12 is the air outlet end, the fan 20 is used to wind out the gas, and similarly, the function of the flow guiding member 60 can be used to make the air flow in the center zone or the side side. At the same time, it is taken away from the fuel cell stack 10. As shown in Figures 5A and 5B, the arrows in the figure indicate the flow of the airflow. To illustrate the necessity and functionality of the flow guide 60, as shown in Fig. 6, it is a temperature profile of the air-cooled fuel cell structure 40 without the flow guide 60. Although shortening the length of the hood reduces the loss of internal airflow and does contribute to the overall temperature reduction, it does not improve the internal airflow unevenness. Therefore, the shortening of the hood or the design of the hood 50 can only reduce the overall temperature, but it cannot uniformize the airflow. In other words, there is still a certain temperature difference in the fuel cell stack 10. As shown in Fig. 7, it is a temperature profile of the air-cooled fuel cell structure 40 to which the flow guiding member 60 is attached. The overall temperature distribution of the temperature profile after the flow guide 60 is added is relatively average. More preferably, the temperature difference can be reduced to within 5 °C after the flow guide 60 is installed in this embodiment. The present invention is intended to be illustrative of the present invention, and is intended to be understood by those skilled in the art and Equivalent modifications or modifications made by the spirit of the invention will still be included in the scope of the claims described below. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing the structure of a conventional long hood fuel cell stack. Figure 2 is a temperature profile of a conventional long hood fuel cell stack. Φ Fig. 3 is a view showing an exploded embodiment of an air-cooled fuel cell structure having a flow guiding member of the present invention. Fig. 4A is a view showing an embodiment in which the deflector of the present invention is connected to the hood by a connecting body. Figure 4B is an embodiment of the present invention in which the flow guiding member is coupled to the hood. Fig. 5A is a schematic view showing the flow of air in the structure of an air-cooled fuel cell having a flow guiding member according to the present invention. Fig. 5B is a schematic view showing the flow of air in the air-cooled fuel cell structure with a flow guiding member of the present invention. Fig. 6 is a temperature distribution diagram of a structure of a short hood air-cooled fuel cell without a flow guide member according to the present invention. Figure 7 is a temperature distribution diagram of a structure of a short hood air-cooled fuel cell with a flow guide attached to the present invention. [Explanation of main component symbols] 10................Fuel battery pack 9 201125200 11 ................ Gas flow path 12 . ...............first end 13 ................second end 20 ......... .......fan 21 ................blade 30................Wind cover 40.... ............Air-cooled fuel cell structure 50 ................Wind cover 51 ............ ....first opening 52 ................ second opening 60 ........... deflector 61 .. ..............connector